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Argyrodite

Year of discovery: 1886 (Himmelsfürst mine, Germany), 1951 (Japan)

Locality list: 7 localities of argyrodite

• Ag₈GeS₆
• [Ag⁺₈][Ge⁴⁺][S₆]^12-

• Class: Argyrodite series
• Class: Sulfide

• Ge => Sn: Canfieldite (Series)

• Color: Reddish gray
• Tarnish: Yellow, Black
• Streak: Dark gray
• Luster: Metallic
• Diaphaneity: Opaque

• Habit: Pseudooctahedral, Dodecahedral, Cubic
• Aggregate: Radial
• Twin: {111} Pseudo-spinel twin

• Cleavage: No
• Hardness: 2.5-3
• Density: 6.3

• System: Orthorhombic, Pseudocubic
• Group: mm2, Pna2
• Lattice: a=15.1, b=7.5, c=10.6

Etymology: Contains argent (silver) in Greek